Fuel gas supply system
a technology of fuel gas supply and supply system, which is applied in the direction of transportation hydrogen technology, climate sustainability, electric generating devices, etc., to achieve the effect of accurately detecting differential pressure and reducing detection errors
Active Publication Date: 2021-10-26
HONDA MOTOR CO LTD
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- Description
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Benefits of technology
The present invention aims to provide a fuel gas supply system that can accurately detect the difference in pressure between the fuel gas before and after a valve mechanism. This is achieved by using a differential pressure sensor that detects the pressure of the fuel gas in the upstream and downstream channels, reducing detection errors and allowing for accurate measurement of the differential pressure.
Problems solved by technology
However, in the conventional technique as disclosed in Japanese Laid-Open Patent Publication No. 2011-028950, since the differential pressure between the pressure of the hydrogen gas (fuel gas) on the upstream side of the injector (valve mechanism) and the pressure of the hydrogen gas on the downstream of the injector (valve mechanism) is calculated using the upstream pressure sensor and the downstream pressure sensor, the calculated differential pressure include detection errors of the upstream pressure sensor and the downstream pressure sensor, respectively.
Method used
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Embodiment Construction
[0012]Hereafter, a preferred embodiment of a fuel gas supply system according to the present invention will be described with reference to the accompanying drawings.
[0013]A fuel cell system 12 including a fuel gas supply system 10 according to an embodiment of the present invention is mounted, e.g., in a fuel cell vehicle (not shown) such as a fuel cell electric automobile.
[0014]As shown in FIG. 1, the fuel cell system 12 includes a fuel cell 14, the fuel gas supply system 10 for supplying a fuel gas (e.g., a hydrogen gas) to the fuel cell 14, and an oxygen-containing supply apparatus (not shown) for supplying an oxygen-containing gas (e.g., air) to the fuel cell 14. The fuel cell 14 is formed by stacking a plurality of power generation cells (not shown) for generating electricity by electrochemical reactions of the fuel gas and the oxygen-containing gas.
[0015]The fuel gas supply system 10 includes a fuel gas supply apparatus 16 and a control unit 18. The fuel gas supply apparatus 1...
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Abstract
A fuel gas supply system includes a valve mechanism, an upstream channel for guiding a fuel gas to the valve mechanism, a downstream channel into which the fuel gas discharged from the valve mechanism is guided, a differential pressure sensor for detecting the differential pressure between the pressure of the fuel gas in the upstream channel and the pressure of the fuel gas in the downstream channel, a first pressure sensor for detecting the pressure of the fuel gas in the upstream channel, and a second pressure sensor for detecting the pressure of the fuel gas in the downstream channel. The number of the differential pressure is one, the number of the first pressure sensor is one, and the number of the second pressure sensor is one.
Description
CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2018-155937 filed on Aug. 23, 2018, the contents of which are incorporated herein by reference.BACKGROUND OF THE INVENTIONField of the Invention[0002]The present invention relates to a fuel gas supply system for supplying a fuel gas to a fuel cell.Description of the Related Art[0003]For example, according to the disclosure of Japanese Laid-Open Patent Publication No. 2011-028950, an upstream pressure sensor is provided upstream of an injector in a hydrogen gas supply channel, and a downstream pressure sensor is provided downstream of the injector in the hydrogen gas supply channel, and a system calculates the differential pressure between the pressure of the hydrogen gas on the upstream side of the injector and the pressure of the hydrogen gas on the downstream side of the injector, based on the upstream pressure sensor and the downstream...
Claims
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IPC IPC(8): H01M8/04H01M8/04089H01M8/04082H01M8/0438H01M8/04746H01M8/04664
CPCH01M8/04104H01M8/04201H01M8/04388H01M8/04671H01M8/04753H01M2250/20Y02E60/50Y02T90/40
InventorHATTORI, MAKOTO
OwnerHONDA MOTOR CO LTD